The department warns that rapidly dropping temperatures will create slick spots on roads - particularly bridges, ramps and overpasses. on Friday: "Pretreating our roads prior to the quick drop in temperature tomorrow is not an option because the rain would wash away any salt that we place." The Allegheny County Public Works Department says it will deploy 33 salt trucks starting at 3 a.m. "Always take your time, and give yourself more time to get somewhere than you normally would. "Make sure your cell phone is charged in case you get in any trouble on the roads," said Hendricks. Travelers should pack their vehicles with emergency supplies such as blankets, flashlights, food and medications. Though it's best to stay home, Hendricks advises that if people must travel, they should try to drive a shorter car and leave the SUV or box truck in the garage: Winds are more likely to blow taller vehicles off the road. "Also, with these winds, driving a high-profile vehicle will certainly push you around a bit." "Black ice is going to be a significant issue that people need to pay attention to," said Lee Hendricks, a meteorologist at the National Weather Service's Pittsburgh office. Therefore, any rain and the little snow that does fall in western Pennsylvania will freeze on roadways. The cold weather coming down from central Canada, coupled with wind bursts of up to 60 mph, will result in wind chill levels as low as -20 degrees on Friday and -10 degrees on Christmas Eve. But that doesn't mean Pittsburghers are in the clear this weekend. A warm front coming from the Gulf of Mexico means the brunt of the so-called "bomb cyclone" forecasted to blanket other parts of the U.S. Pittsburgh will get little to no snow this holiday season.
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